#include "ManagedBlasProvider.h"

doublereal SmartMathLibrary::Blas::Engine::ManagedBlasProvider::dasum_(integer *n,
  doublereal *dx, integer *incx)
{
  /* System generated locals */
  integer i__1, i__2;
  doublereal ret_val, d__1, d__2, d__3, d__4, d__5, d__6;
  /* Local variables */
  static integer i__, m, mp1;
  static doublereal dtemp;
  static integer nincx;
  /*  Purpose   
  =======   
  takes the sum of the absolute values.   
  jack dongarra, linpack, 3/11/78.   
  modified 3/93 to return if incx .le. 0.   
  modified 12/3/93, array(1) declarations changed to array(*)   
  Parameter adjustments */
  --dx;
  /* Function Body */
  ret_val = 0.;
  dtemp = 0.;
  if (*n <= 0 ||  *incx <= 0)
  {
    return ret_val;
  }
  if (*incx == 1)
  {
    goto L20;
  }
  /*        code for increment not equal to 1 */
  nincx =  *n **incx;
  i__1 = nincx;
  i__2 =  *incx;
  for (i__ = 1; i__2 < 0 ? i__ >= i__1: i__ <= i__1; i__ += i__2)
  {
    dtemp += (d__1 = dx[i__], abs(d__1));
    /* L10: */
  }
  ret_val = dtemp;
  return ret_val;
  /*        code for increment equal to 1   
  clean-up loop */
  L20: m =  *n % 6;
  if (m == 0)
  {
    goto L40;
  }
  i__2 = m;
  for (i__ = 1; i__ <= i__2; ++i__)
  {
    dtemp += (d__1 = dx[i__], abs(d__1));
    /* L30: */
  }
  if (*n < 6)
  {
    goto L60;
  }
  L40: mp1 = m + 1;
  i__2 =  *n;
  for (i__ = mp1; i__ <= i__2; i__ += 6)
  {
    dtemp = dtemp + (d__1 = dx[i__], abs(d__1)) + (d__2 = dx[i__ + 1], abs(d__2)
      ) + (d__3 = dx[i__ + 2], abs(d__3)) + (d__4 = dx[i__ + 3], abs(d__4)) + 
      (d__5 = dx[i__ + 4], abs(d__5)) + (d__6 = dx[i__ + 5], abs(d__6));
    /* L50: */
  }
  L60: ret_val = dtemp;
  return ret_val;
} /* dasum_ */
